Repartee is fast-paced, witty conversation.(noun)
Fast-paced dialogue between hosts of a great, clever and funny talk show is an example of repartee.
See repartee in Webster's New World College Dictionary
Origin: Fr repartie, fem. pp. of repartir, to return quickly a thrust or a blow, reply < re-, back + partir (L partire), to part
See repartee in American Heritage Dictionary 4
Origin: French repartie
Origin: , from feminine past participle of repartir, to retort
Origin: , from Old French, to retort, to depart again
Origin: : re-, re-
Origin: + partir, to depart (from Latin partīre, to divide, from pars, part-, part; see perə-2 in Indo-European roots).
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